<template>
  <div class="login-container">
    <el-form
      ref="loginForm"
      :model="loginForm"
      :rules="loginRules"
      class="login-form"
      auto-complete="on"
      label-position="left"
    >
      <!-- 表单标题 -->
      <div class="title-container">
        <h3 class="title">
          <img src="@/assets/common/login-logo.png" alt="" srcset="">
        </h3>
      </div>
      <!-- 手机号输入框 -->
      <el-form-item prop="mobile">
        <span class="svg-container">
          <svg-icon icon-class="user" />
        </span>
        <el-input
          ref="mobile"
          v-model="loginForm.mobile"
          placeholder="请输入电话号码"
          name="mobile"
          type="text"
          tabindex="1"
          auto-complete="on"
        />
      </el-form-item>

      <!-- 密码输入框 -->
      <el-form-item prop="password">
        <span class="svg-container">
          <svg-icon icon-class="password" />
        </span>
        <el-input
          :key="passwordType"
          ref="password"
          v-model="loginForm.password"
          :type="passwordType"
          placeholder="请输入密码!"
          name="password"
          tabindex="2"
          auto-complete="on"
          @keyup.enter.native="handleLogin"
        />
        <span class="show-pwd" @click="showPwd">
          <svg-icon :icon-class="passwordType === 'password' ? 'eye' : 'eye-open'" />
        </span>
      </el-form-item>

      <!-- 登录按钮 -->
      <el-button
        :loading="loading"
        type="primary"
        style="width: 100%; margin-bottom: 30px"
        @click.native.prevent="handleLogin"
      >Login</el-button>
      <!-- 提示 -->
      <div class="tips">
        <span style="margin-right: 20px">账号: 13800000002</span>
        <span> 密码: 123456</span>
      </div>
    </el-form>
  </div>
</template>

<script>
// 正则验证 工具函数
import { validMOBILE } from '@/utils/validate'
// 引入登录函数
// import { login } from '@/api/user'

export default {
  name: 'Login',
  data() {
    // 自定义表单校验规则函数 手机号
    const validateUsername = (rule, value, callback) => {
      if (!validMOBILE(value)) {
        callback(new Error('请输入正确的手机号!'))
      } else {
        callback()
      }
    }

    return {
      // 表单数据
      loginForm: {
        mobile: '13800000002',
        password: '123456'
      },
      // 校验
      loginRules: {
        mobile: [
          { required: true, trigger: 'blur', validator: validateUsername }
        ],
        password: [
          { required: true, trigger: 'blur', message: '输入不能为空!' },
          {
            pattern: /^[a-z0-9_-]{6,16}$/,
            trigger: 'blur',
            message: '密码输入的格式为6-16位'
          }
        ]
      },
      // 是否加载
      loading: false,
      // 密码输入框类型
      passwordType: 'password',
      redirect: undefined
    }
  },
  watch: {
    $route: {
      handler: function(route) {
        this.redirect = route.query && route.query.redirect
      },
      immediate: true
    }
  },
  methods: {
    // 密码框右侧小按钮 点击切换 1.动态变换图标 2.改变输入框的类型
    showPwd() {
      if (this.passwordType === 'password') {
        this.passwordType = ''
      } else {
        this.passwordType = 'password'
      }
      this.$nextTick(() => {
        this.$refs.password.focus()
      })
    },
    // 登录请求方法
    async doLogin() {
      try {
        // 调用actions方法 发送登录请求
        // ! 这个方法是异步发送请求的所以如果后续代码执行需要 注意使用await
        await this.$store.dispatch('user/userLogin', this.loginForm)
        // this.$message.success('登录成功!欢迎回来.') //注意前面是异步
        // 登录成功 跳转页面 如果是退出登录的 读取村粗在 query对象里面的旧地址
        // debugger
        // boolean('undefined')  ---> true
        console.log(this.$route.query.oldPath)
        this.$router.push(this.$route.query.oldPath || '/')
        // debugger
      } catch (error) {
        console.log(error)
        this.$message({ type: 'error', message: `${error.message}` })
      }

      this.loading = false
    },
    // 点击登录按钮 发送请求登录
    handleLogin() {
      this.$refs.loginForm.validate((valid) => {
        if (valid) {
          this.loading = true
          this.doLogin()
        } else {
          // 手动校验! 提示
          this.$message({ type: 'error', message: '请注意输入信息的格式哈!' })
          return false
        }
      })
    }
  }
}
</script>

<style lang="scss">
/* 修复input 背景不协调 和光标变色 */
/* Detail see https://github.com/PanJiaChen/vue-element-admin/pull/927 */

$bg: #283443;
$light_gray: #68b0fe;
$cursor: #fff;

@supports (-webkit-mask: none) and (not (cater-color: $cursor)) {
  .login-container .el-input input {
    color: $cursor;
  }
}

/* reset element-ui css */
.login-container {
  background-image: url("~@/assets/common/login.jpg"); // 设置背景图片 静态资源要加 '~'
  background-position: center; // 将图片位置设置为充满整个屏幕

  .el-input {
    display: inline-block;
    height: 47px;
    width: 85%;

    input {
      background: transparent;
      border: 0px;
      -webkit-appearance: none;
      border-radius: 0px;
      padding: 12px 5px 12px 15px;
      color: $light_gray;
      height: 47px;
      caret-color: $cursor;

      &:-webkit-autofill {
        box-shadow: 0 0 0px 1000px $bg inset !important;
        -webkit-text-fill-color: $cursor !important;
      }
    }
  }

  .el-form-item {
    border: 1px solid rgba(255, 255, 255, 0.1);
    background: rgba(255, 255, 255, 0.7); // 输入登录表单的背景色
    border-radius: 5px;
    color: #454545;

    // 错误提示颜色
    .el-form-item__error {
      color: #fff;
    }
  }
}
</style>

<style lang="scss" scoped>
$bg: #2d3a4b;
$dark_gray: #889aa4;
$light_gray: #eee;

.login-container {
  min-height: 100%;
  width: 100%;
  overflow: hidden;

  .login-form {
    position: relative;
    width: 520px;
    max-width: 100%;
    padding: 160px 35px 0;
    margin: 0 auto;
    overflow: hidden;
  }

  .loginBtn {
    background: #407ffe;
    height: 64px;
    line-height: 32px;
    font-size: 24px;
  }

  .tips {
    font-size: 14px;
    color: #fff;
    margin-bottom: 10px;

    span {
      &:first-of-type {
        margin-right: 16px;
      }
    }
  }

  .svg-container {
    padding: 6px 5px 6px 15px;
    color: $dark_gray;
    vertical-align: middle;
    width: 30px;
    display: inline-block;
  }

  .title-container {
    position: relative;

    .title {
      font-size: 26px;
      color: $light_gray;
      margin: 0px auto 40px auto;
      text-align: center;
      font-weight: bold;
    }
  }

  .show-pwd {
    position: absolute;
    right: 10px;
    top: 7px;
    font-size: 16px;
    color: $dark_gray;
    cursor: pointer;
    user-select: none;
  }
}
</style>
